- Set Mini X_MIN_POS to -0.1, so X=0 does not ride against X_MIN endstop. This
prevents moves along X=0 from failing once a bed compensation matrix has been
loaded. This caused G29 to fail if used multiple times in a row.
- Before rewipe in G29, added move to (X_MIN_POS,Y_MAX_POS). This is a workaround to
prevent the Y coordinate shift duing G29 on older Minis from causing the rewipe to
miss the wiper pad.
- Changed Mini baud rate to 250000 since this is more reliable.
- Disable the extruder motor while probing on all Mini toolheads. This was
done before just on the Aerostruder, but I saw the same symptoms on a
standard toolhead on a Gladiola.